Marietta Lock 1 Weather Records (USC00334924)

Record envelope, standing records and threshold days for Marietta Lock 1 (USC00334924), Ohio, United States, with 83 years of record.

Key Facts for Marietta Lock 1

Marietta Lock 1 (USC00334924) is a weather station in Ohio, United States at 39.41 latitude and -81.45 longitude, 186 m (610 ft) above sea level.
The station reports from 1931 to 2013, 83 years of record.
0 records set at Marietta Lock 1 still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Marietta Lock 1 set a daily record precipitation of 40.6 mm (1.6 in) on 22 December 2013.

About the Station

Location: Ohio, United States, 39.41 latitude, -81.45 longitude.
Elevation: 186 m (610 ft).
Period of record: 1931 to 2013, 83 years.
Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Marietta Lock 1. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Marietta Lock 1, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

0 standing records

0 records at Marietta Lock 1 still stand.

All-Time Record Progression

1 new records

1 all-time records were set at Marietta Lock 1 between 18 September 2004 and 18 September 2004. Each dot is a new record.

Wettest Day of Each Month

Sep: 130.6 mm (5.1 in)

The wettest day on record for each calendar month at Marietta Lock 1. The most was 130.6 mm (5.1 in) on 18 September 2004.

Record daily precipitation for each month at Marietta Lock 1
Month	Record daily precipitation (mm)	Date
Jan	43.7 mm (1.7 in)	11 January 1974
Feb	71.1 mm (2.8 in)	19 February 2000
Mar	80.0 mm (3.1 in)	5 March 1963
Apr	59.7 mm (2.4 in)	12 April 1948
May	94.0 mm (3.7 in)	24 May 1968
Jun	113.0 mm (4.4 in)	28 June 1998
Jul	99.1 mm (3.9 in)	15 July 1985
Aug	116.3 mm (4.6 in)	1 August 1935
Sep	130.6 mm (5.1 in)	18 September 2004
Oct	62.2 mm (2.4 in)	31 October 1970
Nov	51.6 mm (2.0 in)	5 November 1985
Dec	57.2 mm (2.3 in)	13 December 1949

Latest Records

Latest records at Marietta Lock 1
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
22 December 2013	Marietta Lock 1, US	daily rain	40.6 mm (1.6 in)	14.7 mm (0.6 in)	30 years	35 of 100 (Notable)
6 December 2013	Marietta Lock 1, US	daily rain	38.6 mm (1.5 in)	8.1 mm (0.32 in)	68 years	38 of 100 (Notable)
13 August 2013	Marietta Lock 1, US	daily rain	114.3 mm (4.5 in)	82.5 mm (3.2 in)	60 years	66 of 100 (Major)
25 March 2013	Marietta Lock 1, US	daily rain	17.0 mm (0.7 in)	3.0 mm (0.12 in)	23 years	17 of 100 (Routine)
31 January 2013	Marietta Lock 1, US	daily rain	29.2 mm (1.1 in)	3.8 mm (0.15 in)	63 years	31 of 100 (Routine)
27 December 2012	Marietta Lock 1, US	daily rain	25.7 mm (1.0 in)	9.2 mm (0.36 in)	69 years	38 of 100 (Notable)
8 December 2012	Marietta Lock 1, US	daily rain	29.2 mm (1.1 in)	3.8 mm (0.15 in)	62 years	29 of 100 (Routine)
2 September 2012	Marietta Lock 1, US	daily rain	53.3 mm (2.1 in)	16.5 mm (0.6 in)	9 years	22 of 100 (Routine)
27 July 2012	Marietta Lock 1, US	daily rain	37.1 mm (1.5 in)	8.7 mm (0.34 in)	76 years	35 of 100 (Notable)
8 May 2012	Marietta Lock 1, US	daily rain	31.5 mm (1.2 in)	1.0 mm (0.04 in)	18 years	13 of 100 (Routine)
2 May 2012	Marietta Lock 1, US	daily rain	27.9 mm (1.1 in)	1.7 mm (0.07 in)	17 years	13 of 100 (Routine)
29 February 2012	Marietta Lock 1, US	daily rain (Tie)	3.8 mm (0.15 in)	tie	68 years	6 of 100 (Routine)
27 January 2012	Marietta Lock 1, US	daily rain	32.5 mm (1.3 in)	3.3 mm (0.13 in)	60 years	29 of 100 (Routine)
15 November 2011	Marietta Lock 1, US	daily rain	22.4 mm (0.9 in)	4.6 mm (0.18 in)	2 years	12 of 100 (Routine)
17 April 2011	Marietta Lock 1, US	daily rain	25.7 mm (1.0 in)	3.9 mm (0.15 in)	65 years	30 of 100 (Routine)
27 March 2011	Marietta Lock 1, US	daily snowfall	1.3 cm (0.5 in)	1.3 cm (0.5 in)	69 years	20 of 100 (Routine)
22 February 2011	Marietta Lock 1, US	daily rain	31.2 mm (1.2 in)	5.8 mm (0.23 in)	21 years	20 of 100 (Routine)
9 February 2011	Marietta Lock 1, US	daily snowfall	1.3 cm (0.5 in)	1.3 cm (0.5 in)	75 years	20 of 100 (Routine)
21 January 2011	Marietta Lock 1, US	daily snowfall	12.7 cm (5.0 in)	2.5 cm (1.0 in)	9 years	16 of 100 (Routine)
25 December 2010	Marietta Lock 1, US	daily snowfall (Tie)	2.5 cm (1.0 in)	tie	64 years	6 of 100 (Routine)

Extremes by Year

1931 to 2013

Yearly extremes at Marietta Lock 1: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	130.6 mm (5.1 in)	2004	52.7 mm (2.1 in)	80
Wettest five days (Rx5day)	190.8 mm (7.5 in)	1998	83.7 mm (3.3 in)	80
Longest dry spell (CDD)	48 days	1963	17 days	80

Wettest day (Rx1day)

The wettest day of the year at Marietta Lock 1, 1931 to 2013. The record is 130.6 mm (5.1 in) in 2004, marked on the chart; the median year is 52.7 mm (2.1 in).

Wettest day (Rx1day) at Marietta Lock 1 by year
Year	Wettest day (Rx1day)
1931	n/a
1934	24.9 mm (1.0 in)
1935	116.3 mm (4.6 in)
1936	54.1 mm (2.1 in)
1937	37.8 mm (1.5 in)
1938	43.7 mm (1.7 in)
1939	43.9 mm (1.7 in)
1940	52.6 mm (2.1 in)
1941	88.9 mm (3.5 in)
1942	40.6 mm (1.6 in)
1943	53.3 mm (2.1 in)
1944	41.9 mm (1.6 in)
1945	58.4 mm (2.3 in)
1946	54.6 mm (2.1 in)
1947	81.3 mm (3.2 in)
1948	59.7 mm (2.4 in)
1949	57.2 mm (2.3 in)
1950	74.9 mm (2.9 in)
1951	58.4 mm (2.3 in)
1952	50.8 mm (2.0 in)
1953	59.7 mm (2.4 in)
1954	61.0 mm (2.4 in)
1955	80.0 mm (3.1 in)
1956	41.9 mm (1.6 in)
1957	43.2 mm (1.7 in)
1958	44.7 mm (1.8 in)
1959	30.0 mm (1.2 in)
1960	41.9 mm (1.6 in)
1961	36.8 mm (1.4 in)
1962	44.5 mm (1.8 in)
1963	80.0 mm (3.1 in)
1964	40.6 mm (1.6 in)
1965	45.7 mm (1.8 in)
1966	30.5 mm (1.2 in)
1967	44.5 mm (1.8 in)
1968	94.0 mm (3.7 in)
1969	74.9 mm (2.9 in)
1970	68.6 mm (2.7 in)
1971	54.6 mm (2.1 in)
1972	54.6 mm (2.1 in)
1973	30.5 mm (1.2 in)
1974	43.7 mm (1.7 in)
1975	53.3 mm (2.1 in)
1976	44.2 mm (1.7 in)
1977	59.2 mm (2.3 in)
1978	50.8 mm (2.0 in)
1979	50.8 mm (2.0 in)
1980	34.8 mm (1.4 in)
1981	55.1 mm (2.2 in)
1982	44.2 mm (1.7 in)
1983	54.4 mm (2.1 in)
1984	39.6 mm (1.6 in)
1985	99.1 mm (3.9 in)
1986	48.8 mm (1.9 in)
1987	52.8 mm (2.1 in)
1988	50.8 mm (2.0 in)
1989	72.9 mm (2.9 in)
1990	94.0 mm (3.7 in)
1991	55.9 mm (2.2 in)
1992	34.3 mm (1.4 in)
1993	34.8 mm (1.4 in)
1994	68.6 mm (2.7 in)
1995	65.3 mm (2.6 in)
1996	51.3 mm (2.0 in)
1997	81.5 mm (3.2 in)
1998	113.0 mm (4.4 in)
1999	46.7 mm (1.8 in)
2000	71.1 mm (2.8 in)
2001	35.8 mm (1.4 in)
2002	49.8 mm (2.0 in)
2003	63.2 mm (2.5 in)
2004	130.6 mm (5.1 in)
2005	46.2 mm (1.8 in)
2006	35.8 mm (1.4 in)
2007	39.9 mm (1.6 in)
2008	35.6 mm (1.4 in)
2009	61.7 mm (2.4 in)
2010	75.7 mm (3.0 in)
2011	40.1 mm (1.6 in)
2012	53.3 mm (2.1 in)
2013	114.3 mm (4.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Marietta Lock 1, 1931 to 2013. The record is 190.8 mm (7.5 in) in 1998, marked on the chart; the median year is 83.7 mm (3.3 in).

Wettest five days (Rx5day) at Marietta Lock 1 by year
Year	Wettest five days (Rx5day)
1931	n/a
1934	28.5 mm (1.1 in)
1935	154.7 mm (6.1 in)
1936	87.4 mm (3.4 in)
1937	96.7 mm (3.8 in)
1938	101.4 mm (4.0 in)
1939	83.2 mm (3.3 in)
1940	97.2 mm (3.8 in)
1941	169.9 mm (6.7 in)
1942	74.5 mm (2.9 in)
1943	72.1 mm (2.8 in)
1944	72.5 mm (2.9 in)
1945	96.3 mm (3.8 in)
1946	67.3 mm (2.6 in)
1947	111.7 mm (4.4 in)
1948	96.5 mm (3.8 in)
1949	75.7 mm (3.0 in)
1950	100.6 mm (4.0 in)
1951	66.0 mm (2.6 in)
1952	100.3 mm (3.9 in)
1953	94.1 mm (3.7 in)
1954	97.6 mm (3.8 in)
1955	120.7 mm (4.8 in)
1956	57.7 mm (2.3 in)
1957	55.9 mm (2.2 in)
1958	78.3 mm (3.1 in)
1959	52.2 mm (2.1 in)
1960	54.6 mm (2.1 in)
1961	87.3 mm (3.4 in)
1962	71.2 mm (2.8 in)
1963	114.3 mm (4.5 in)
1964	62.2 mm (2.4 in)
1965	56.4 mm (2.2 in)
1966	49.5 mm (1.9 in)
1967	54.7 mm (2.2 in)
1968	134.6 mm (5.3 in)
1969	76.2 mm (3.0 in)
1970	113.0 mm (4.4 in)
1971	83.8 mm (3.3 in)
1972	72.4 mm (2.9 in)
1973	95.3 mm (3.8 in)
1974	101.6 mm (4.0 in)
1975	67.8 mm (2.7 in)
1976	64.0 mm (2.5 in)
1977	96.3 mm (3.8 in)
1978	72.4 mm (2.9 in)
1979	139.7 mm (5.5 in)
1980	68.4 mm (2.7 in)
1981	74.0 mm (2.9 in)
1982	69.3 mm (2.7 in)
1983	116.4 mm (4.6 in)
1984	51.1 mm (2.0 in)
1985	116.1 mm (4.6 in)
1986	84.4 mm (3.3 in)
1987	64.7 mm (2.5 in)
1988	142.2 mm (5.6 in)
1989	120.9 mm (4.8 in)
1990	155.2 mm (6.1 in)
1991	84.3 mm (3.3 in)
1992	63.0 mm (2.5 in)
1993	51.8 mm (2.0 in)
1994	103.0 mm (4.1 in)
1995	97.1 mm (3.8 in)
1996	69.9 mm (2.8 in)
1997	119.1 mm (4.7 in)
1998	190.8 mm (7.5 in)
1999	61.3 mm (2.4 in)
2000	107.7 mm (4.2 in)
2001	74.7 mm (2.9 in)
2002	93.2 mm (3.7 in)
2003	99.8 mm (3.9 in)
2004	138.7 mm (5.5 in)
2005	77.8 mm (3.1 in)
2006	68.3 mm (2.7 in)
2007	62.7 mm (2.5 in)
2008	67.8 mm (2.7 in)
2009	77.7 mm (3.1 in)
2010	106.2 mm (4.2 in)
2011	80.4 mm (3.2 in)
2012	83.6 mm (3.3 in)
2013	119.7 mm (4.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Marietta Lock 1, 1931 to 2013. The record is 48 days in 1963, marked on the chart; the median year is 17 days.

Longest dry spell (CDD) at Marietta Lock 1 by year
Year	Longest dry spell (CDD)
1931	n/a
1934	24 days
1935	25 days
1936	26 days
1937	22 days
1938	24 days
1939	19 days
1940	14 days
1941	23 days
1942	20 days
1943	20 days
1944	13 days
1945	16 days
1946	13 days
1947	18 days
1948	13 days
1949	21 days
1950	21 days
1951	15 days
1952	24 days
1953	25 days
1954	14 days
1955	29 days
1956	14 days
1957	13 days
1958	12 days
1959	14 days
1960	14 days
1961	15 days
1962	15 days
1963	48 days
1964	23 days
1965	16 days
1966	19 days
1967	24 days
1968	17 days
1969	27 days
1970	15 days
1971	17 days
1972	13 days
1973	15 days
1974	15 days
1975	15 days
1976	27 days
1977	17 days
1978	18 days
1979	13 days
1980	12 days
1981	17 days
1982	19 days
1983	22 days
1984	20 days
1985	17 days
1986	12 days
1987	17 days
1988	30 days
1989	13 days
1990	12 days
1991	17 days
1992	15 days
1993	17 days
1994	16 days
1995	11 days
1996	19 days
1997	12 days
1998	13 days
1999	16 days
2000	14 days
2001	18 days
2002	13 days
2003	12 days
2004	23 days
2005	23 days
2006	13 days
2007	17 days
2008	14 days
2009	17 days
2010	11 days
2011	11 days
2012	19 days
2013	11 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Rainfall Return Levels

74 years, 1935 to 2013

A day with at least 52.3 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 142.2 mm (5.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Marietta Lock 1: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	52.3 mm (2.1 in)
5 years	70.2 mm (2.8 in)
10 years	84.2 mm (3.3 in)
25 years	104.8 mm (4.1 in)
50 years	122.4 mm (4.8 in)
100 years	142.2 mm (5.6 in)	Longer than the 74 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 74 years of values from 1935 to 2013.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 130.6 mm (5.1 in) in 2004; 116.3 mm (4.6 in) in 1935; 114.3 mm (4.5 in) in 2013.

Download the Data

Data for Marietta Lock 1 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Marietta Lock 1 threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a